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@uitrit ttttts luttnt @ffice JONATHAN F. BARRETI, OF CONCORD, MASSACHUSETTS.

Letters Pate/1t No. 69,163, (lated September 24, 1867.'

IMPROVED RUBBER BOOT-HEELS.

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TO ALL WHOM IT MAY CONCERX:

Be it known that l', J. F. BARRETT, of Concord, in the eounty'of `\Iiddlesex, and State of Massachusetts, have invented an improvement in Attaching Rubber Boot and Shoe-Heels, he.; and I do hereby declare that the following, taken in connection with the drawings which accompany and form part of this specification, is a description of my invent-ion snilieient to enable those skilled in the art to practise it.

The invention relates particularly to the attachment; of boot and shoe-heels, made of rubber or other siuiilar elastic material, or the compounds thereof, to their soles; but it is applicable to other similar purposes in which it is desirable to firmly attach a yielding material to any surface by means of nails driven into the saine. The gener-nl adaptation of the invention to different purposes will however be clearly understood by the follow ing description of the method of attaching a. rubber heel te its seat.

'The drawing shows a section of the heel, with that partof the sole to which it is fastened.

v Within the rubber or rubber compound a plate, sheet, or strip or metal, or other suitable material, a., is inserted, this being preferably effected by placing the plate in the mould in which the elastic heel is formed, und moulding the rubber around it bythe common processes nfl'ieat und pressure, the plate being,` left embedded in the rubber in the position itis desirable that it should occupy in the moulded heel. y

n fastening the heel to the sole I; the nails c are so driven as to strike the plate a, which will turn their points, and cause them to clinch in the surface of the rubber above the plate, as seen in the drawing.

lt will be obvious that when so secured the heel cannot be separated from the boot or shoe to which it is applied without tearing away the rubber, and that the resistance offered by the bent or clinching parts of the nails offers sufficient obstacle te prevent the separation et" the heel from the boot by weer. Other material than metal may be use-Ll for this plate a., .such material being of suicicnt degree of hardness to turn the points of the nails without theirpene'trating the plate.

Filling of' cork er other light material may enter into the construction of the licei, such material not being employed. to secure the nails, 'but for the purposes of lightness and economy. It' it be desirable to apply treadpieces of leather or other hard material to thc wearing surface of the heel, the opposite or lower surface of the plate a will serve to clinch and fasten the nails driven through such trend-piece into the heel.

I claim the empioyment of a clinchingplate, of. metal or other material, for thc purpose of turning the points of nails used in securing elastic parts te the surfaces to which they are to be attached, substantially as set forth.

JONA. F. BARRETT.

Witnesses F. GoULn, S. B. Kronen. 

